Receive Diagnostic Results 1Ch - Sony DDS-4 Product Description Manual

6. COMMAND SPECIFICATION

6. 14 RECEIVE DIAGNOSTIC RESULTS 1Ch

Bit 7
Byte
0
1
2
3 (MSB)
4
5 Unused (00b)
RECEIVE DIAGNOSTIC RESULTS requests error analysis data be sent to the initiator after completion of a SEND
DIAGNOSTIC command.
Allocation Length:
This field specifies the number of bytes that the initiator has allocated for returned diagnostic data. An Allocation
Length of zero means that no diagnostic data will be transferred. Any other value indicates the maximum number of
bytes that will be transferred.
If the SEND DIAGNOSTIC had the PF bit set, the drive returns four bytes of header data as well as five bytes of the
diagnostic result. If the PF bit was not set, the drive returns only the five bytes of the diagnostic result.
The drive terminates the DATA IN phase when Allocation Length bytes have been transferred or when all the
available diagnostic data (five or nine bytes depending on the PF bit) have been transferred to the initiator, which-
ever, is less.
If the drive returns a CHECK CONDITION status with the HARDWARE ERROR Sense Key and an Additional Sense
Code of DIAGNOSTIC FAILURE set on completion of a SEND DIAGNOSTIC, then the Host should issue a RE-
CEIVE DIAGNOSTIC RESULTS command to receive the eight bytes of data indicating the actual failure and the Most
Suspect Unit (MSU).
6 - 64 SONY SDT-10000/SDT-11000 DDS Tape Drive
6 5
Logical Unit Number
4 3
Operation Code (1Ch)
Reserved
Reserved
Allocation Length
Reserved
RECEIVE DIAGNOSTIC RESULTS
2 1
(LSB)
0